Fancy Tools
A device that can measure current, voltage, and resistance in a circuit
What is a multimeter?
The equation we use to calculate voltage, current, or resistance
What is Ohm's Law?
The force that makes electrons flow through a circuit
What is voltage?
What AC stands for
What is alternating current?
What ohms are a measure of
What is resistance?
The meter setting where you can check if your leads are good
What is resistance?
I
What is current?
The voltage of a standard AA battery
What is 1.5V?
The full name for a unit of current
What is ampere?
High current, very low resistance
What is a short circuit?
A safety component inside the meter that can blow if you try to measure current with your leads across a battery
What is a fuse?
The voltage of a circuit with 150 ohms of resistance and 0.5 amps of current
What is 75 volts?
The safest mode on a multimeter where you are least likely to do any damage
What is voltage?
What you are measuring if you insert your meter leads in series in the circuit
What is current?
Useful indicators that tell you the resistance value of a resistor
What are color bands?
When measuring voltage, you connect the probes in this arrangement—aka "across"—the component or voltage source
What is parallel?
What would happen to current if the resistance of a circuit is cut in half while voltage remains constant
What is increase?
The theoretical voltage across a perfect conductor, like a wire, with no resistance
What is 0V?
The direction in which conventional current flows, opposite of electron flow
What is positive to negative?
The reading you would expect on an ohmmeter across two wires that have shorted out
What is close to zero?
Signified by the squiggly line (~) next to V on the meter
What is AC Voltage?
The current in a circuit with a 9V battery and a 300 ohm resistor
What is 0.03A/30mA?
In a parallel circuit with a 5V supply and two resistor branches, this is the voltage across the second branch
What is 5V?
How to calculate the total current in a parallel circuit
What is adding up the branch currents?
A component with adjustable, variable resistance
What is a potentiometer?